AN ION INTERACTION-MODEL FOR THE DETERMINATION OF CHEMICAL-EQUILIBRIA IN CEMENT WATER-SYSTEMS
AN ION INTERACTION-MODEL FOR THE DETERMINATION OF CHEMICAL-EQUILIBRIA IN CEMENT WATER-SYSTEMS
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DOI：
10.1016/0008-8846(90)90070-e
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发表时间：
1990-03-01
影响因子：
11.4
通讯作者：
REARDON, EJ
中科院分区：
文献类型：
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作者：
REARDON, EJ
本文提出了一个化学平衡模型，用于模拟25°C下孔隙水与胶凝材料中各种无定形和结晶矿物之间的反应。该模型利用Pitzer离子相互作用模型作为计算离子活度系数的基础。这允许模拟高溶质浓度的矿物质和水之间的化学平衡。基于Gartner和Jennings的数据，CSH的变量组成模型也被纳入到求解关系中。最后，通过一个水泥浆体中硫酸连续掺量的模拟实例，说明了模型的基本工作原理。
A chemical equilibria model is proposed for the simulation of reactions between porewater and the various amorphous and crystalline minerals of cementitious materia at 25°C. The model utilizes the Pitzer Ion Interaction model as a basis for the calculation of ion activity coefficients. This allows the simulation of chemical equilibria between minerals and water to high solute concentrations. A variable compositional model for CSH based on the data of Gartner and Jennings is also incorporated into the solving relations. An example simulation of the effect of progressive additions of sulfuric acid on a cement paste are presented to illustrate the basic working of the model.